Question

I have four science questions, I really don't understand science much and the math part is even harder. So could someone help me with these 4 questions?
1. How many grams are there in 2.50 moles of potassium nitrate kno3?
2. How many moles of silver nitrate are there in 80.00 grams of silver nitrate AgNO3?
3. How many moles of phosphoric acid H3PO4?
4. How many moles of magnesium chloride are there in 148 grams of magnesium chloride MgCl2?
Thank You!!

Answer 1

Answer:2.50=x/39+3

X=11.50

Explanation: